Sheet-metal roofing



E. R. PROBERT. SHEET METAL ROOFING.

APPLICATION FILED MAY 21 1519.

1,406,0 2, memed Feb. 7, 1922.

.Zz V62 for:

UNITED STATES PATENT OFFICE.

EDWIN R. PROBERT, OF COVINGTON, KENTUCKY.

SHEET-METAL ROOFING.

Application filed May 2,

T 0 all whom it may concern Y Be it known that I, EDWIN R. Pnonnn'r, a citizen of the United States of America, and a resident of Covingtcn, in the coun y of Kenton and State of Kentucky, have invented a certain new and useful Improvement in Sheet-Metal Roofings, of which the'following is a specification.

, This invention relates to sheetnuatal rooting having crimped longitudinal edges that are adapted to register and overlap in making seams or joints and then nails driven through such lapped crimps into the sheathing beneath for securely fastening the roofing into place for use; and the object of my improvement herein is to provide an overlapped crimp-joint that willrequire practically no more material nor more labor or machinery in making it than the plain inverted- V-shape crimp-joint in common use and which latter, common form is always sub.- jectto more or less capillary leakage and the fastening-nails are driven through the pointed apeXes of the crimps in a most inconvenient and frequently injurious manner, especially when the points of the nails slip from said apexes and accidentally penetrate the main sheet-portion below to cause undue leakage, or they must otherwise be driven into the steep sloping sides of the crimps, that would induce more or less leakage.

The said object is best accomplished by me in providing an overlapping-crimp j oint of peculiar structure, whose under-crimp comprises an inclinedbracing-member that develops into an integral, downturned or vertical extension or supporting-member and that develops thence into a horizontal, lateral fastening-flange or foot-member, and whose overlapping or topping crimp comprises an inclined outer-member that coincides with the saidinclined bracing-member of the under-crimp and developsinto an integral shallow downturned or vertical extension and from thenceinto a short slightly sloped nailingledge or wing-member, which latter has, also, a. still further and final, outwardly sloping downward extension or brace-member that thence passes or extends onward into the next adjoining sheet.

Other incidental features and the advantages of my peculiar form of roofing herein will be fully hereinafter described in connection with the accompanying sheet of drawings, in which,

Figure 1 is a fragmentary perspective Specification of Letters Patent.

1919. Serial No. 294,340.

yienj3 showing one form of my improved oin Figure 2, a transverse section of Fig. 1 showing the manner in which a hook-headed Dall lS driven into fastening-place; and

Figure 3, a fragmentary perspective view of the joint, showing a modification and including a fastening-nail in position ready for driving into the oint.

In all these views, I show simply the joints of contiguous sheets, the latter being in but fragmentary portions and indicated by the numerals S and 9, and the joint being composed of an under-crimp on the sheet 8 and an overlapping or top crimp on the sheet 5).

In Figs. 1 and 2, the under-crimp is composed of a plane upwardly inclined or slant-- ing member 10, an integral, downturned, somewhat highly slanting member 11 and an integral horizontal base or foot-member 12 that extends laterally from the lower edge of member 11, and the upper or overlapping crimp on the sheet 9 is composed of an upright but somewhat highly-slanting but somewhat curtailed or shallow member 13 that develops into an intermediate approximately-horizontal member 14 that thence develops into an upper capping arc-shape mem ber 15 and which, in turn, develops into a downturned slanting-member 16, the latter coinciding with the slanting-member 10 that it laps in use and with its lower edge somewhat above the angle 17 made in the sheet 8 in producing the upwardly-slanting member 10, such curtailing of the member 16 above the angle 17 being intended to minimize any capillary tendency of the water beneath the ,lappe'd members 10 and 16 and to seep into the other members of the joint beyond.

The hook-headed nail 18, shown in Fig. 2, is used to secure the joint in place on the sheathing 19, the point of the nail entering the elevated, approximately-horizontal member 14: of the upper-crimp, as best shown'in Fig. 3, at an inclination so that after it penetrates that member 14"it continues onward (as indicated bythe dottedarrow 20) into the angle 21 that connects the foot-member 12 with the somewhat highly slanting member 11 of the under-crimp, and then it finally continues onward into thesheathing, and the said hook-head conforming to and firmly engaging with the slightly-curved apex of the lapped joint when driving the nail home.

The slope of the ledge member 14 is sufficient to readily drain any water falling thereon, and the chamber beneath. forms an air-space as well as an ample passageway to offset any moisture that might seep into the joint, and thereby keep the joint dry.

The chamber or passage-way beneath the under-crimp members 10 and 11 forms a dry air-space proof against leakage, espeeially when no nails are driven into the lapped apex of the joint above. The said v for the ordinary inverted-V plane-faced crimp joint-members, and the cost of manufacture is not increased to any appreciable extent either, as will be clearly obvious withouti going into any minute explanatory detai. i

It will be seen in all three views of the drawing, that the outer edge of the footmember 12 does not extend clear up to the angle 22 of the'lapping-sheet 9 and its first joint-member 13, thus saving in the undue use of material. V The approximately-perpendicular members 11 and 13 of the joint present firm, stifi' supports or pillars to facilitate. the proper driving of the nails into the joint to materially reinforce the joint and thereby obviate collapse or spreading thereof in laying the roof and in its after use. Thus no cleats are necessary in my form of joint herein when securing it in place on the sheathing.

To still further obviate any tendencyto capillary leakage into the joint, I show in the modified form, Fig. 3, an angular, outward bulge or bend 23 in the lapping-member 16, that provides an air-space and passage-way 2d for any moisture that might seep upwardly from the lower, elevated edge of the member 16, and thus an effective barrier is provided against said capillary leakage-.into thelapped apex above or beyond, the space or passage-way 24 being of ample capacity to drain any leakage entering under the said lower .edge of the member 16,

and with little added material in said member 16 for the said bulge being required in its manufacture. j

. The flat-headed ordinary nail 28' seen in Figure 3 can and will, of course, be used 1. In sheet-metal roofing, a joint for con- 7 tiguous sheets comprising an under-crimp formed along one sheet and having an upwardly-slanting member, an integral approXimately-perpendicular supporting-member and a horizontal plane foot-member extending laterally from the said supportingm ember, and an upper or lapping single crimp formed along the other or next sheet and having in its structure a shallow upwardly-slanting member, an elevated approXimately-horizontal nail-receiving meniber extending laterally from the said shallow upwardly-slanting member toward the said supporting-member of the first-named crimpstructure and a shallow slightly inclined member leading upwardly from said nailreceiving member to a crown or apex-member and an integral outer downwardly-inclined member extending from said crown or apex-member and adapted to aline with and lap upon the first-named slanting member of the first-named crimp-structure, and

fastening-nails adapted to be driven through the said elevated widely-spaced and approximately-horizontal member of the single upper crimp structure, thence downward through the said horizontal plane foot-member of the lower-crimp and finally into the sheathing beneath.

2. In sheet-metal roofing, a joint for contiguous sheets comprising an under-crimp formed along one sheet and having an upwardly-slanting member, an integral approximately-perpendicular supportingmember, and a foot-member, an upper crimp clined lapping-member, and fastening-nails adapted to be driven through the said intermediate approXimately-horizontal member of the upper-erimp and the foot-member of the under-crimp into the sheathing beneath.

EDWIN s, PRQBERT. 

